What are the symptoms of A/C cooling is weak and gradually loses performance in Honda Amaze?

Weak cabin cooling. Air conditioning works intermittently. No blowing from vents. Blower works only on highest speed

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A/C cooling is weak and gradually loses performance

Q: How to fix A/C cooling is weak and gradually loses performance in Honda Amaze?

Evaporator frostbite. Verification of the sensor's seating inside the heater (e.g. in Insight models, loosening of the evaporator frost sensor plug was common). In case of sensor damage - replace the evaporator temperature sensor with a new element.

in Honda Amaze (2008-2022)

Symptoms

Weak cabin cooling
Air conditioning works intermittently
No blowing from vents
Blower works only on highest speed

DTC error codes

Frost Sensor Fault

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Technical diagnosis (Premium)

Recognized technical fault:

Auxiliary controller voltage instability detected

Technical analysis

Detailed analysis of HVAC controller operation parameters, CAN bus data readings, and diagnostic signal waveforms. Purchase PRO access or log in to read the full fault analysis.

Confirmed solution

Complete step-by-step repair procedure including module non-volatile memory reset, sensor calibration, and correct wiring routing. Unlock the full report to see the instruction.

Parts needed

Filters ferrite anti-interference / noise suppressor
Auxiliary starting battery (depending on cell status)

Workshop hacks

Important workshop tips for mechanics regarding bypasses without expensive control module replacement and manufacturer software service bulletins.

TSB / TPI service bulletins

TSB-24-HVAC-01TPI-2068943/2

A/C Technical Specifications

Refrigerant specifications for this model are available in the catalog.

Open refrigerant database

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